Wagon-loading screen.



W. P. MYER.

WAGON LOADING SCREEN. APPLIOATION FILED T13R27. 1911.

1,01 1,889. Patented Dec. 12, 1911.

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. cent parts, in partial section; Fig. 4 a trans- II IT STATES, PATENT OFFICE.-

WILLIAM P. MYER, OF INDIANAPOLIS, INDIANA.

WAGON-LOADING SCREEN.

To all whom it may concern:

Be it known that I, \VILLLAM P. MYER, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Wagon-Loading Screen, of which the following is a specification.

In the handling of coal, especially some readily friable varieties like Pocahontas, it is necessary that the amount of drop of the lumps be as small as possible so as to avoid breaking.

The coal is shipped to the dealer in cars of varying heights and it is desirable, because of labor conditions, to reduce as much as possible the labor involved in shoveling the coal from the cars to wagons alongside the cars.

The object of my invention is to produce an apparatus by means of which'coal, or other similar material, may be simultaneously screened and loaded from a car or bin into a wagon.

The apparatus which I have designed is for the purpose of receiving coal from cars and delivering it to wagons, at the same time screening the coal into two or more grades only one of which is delivered into the wagon.

The accompanying drawings illustrate my invention.

Figure 1 is a perspective view of the device; Fig. 2 a partial vertical section; Fig. 3 an elevation of the upper screen and adjaverse section; and Fig. 5 a fragmentary section of the bag spou In the drawings, 10 indicates a suitable portable vehicle carrying a pair of inclined side bars 11, 11 connected at their lower ends by a plate 12. Each side bar 11 carries a track 13 upon its inner face, and mounted upon the two tracks 13 are rollers 14 carried by a screen frame 15 having a screen 16 of any desired mesh. The screen frame v15 is provided with hooks 17 which cooperate with the rollers 14 to keep the screen frame in place upon the tracks 13.

Secured to the upper end of screen'frame 15, is a cable 18 which passes thence over a pulley 19, carried by cross bar 21 connecting the upper ends of side bars 11, and passing thence down around a Windlass 22 provided with a suitable ratchet detent 23, journaled upon the standards 24 which sup- Specification of Letters Patent.

Application filed February 27, 1911.

port the upper ends of side bars 11. Secured Patented Dec. 12, 1911. Serial No. 611,278.

to the lower end of the screen frame 15 is a bib or apron 25 which delivers the screenings either to the plate 12, or to one of a series of valve plates 26 pivotally mounted at their rear edges between the side bars 11 in a series above the plate 12. The valves 26 may be held in overlapping position to deliver to the adjacent valve and to the plate 12 by means of yoke catches 27 pivotally mounted upon the side bars 11, the arrangement being such that, by an adjustment of the valves 26, the full length of the screen 16 may be available no matter what the position of adjustment of the screen frame 15 may be.

Struts 31 are secured at their lower ends to the screen frame 15, and at their upper ends carry a hopper 32 which is inclined downwardly transversely of the screen frame 15. Pivoted at 33, at the upper edge of the hopper 32, is a screen frame 34 provided with a coarse screen 35 which lies above the receiving end of the hopper. The screen frame 34 is provided at its upper end with a shoveling hopper 36 which is provided with a valve bottom 37 yieldingly held in normal position by a counterweight 38. Pivotally secured to the lower delivery end of the screen frame 34 is a delivery spout or gate 39 provided with a handle 41 by means of which it may be readily swung either to delivery position, as shown in Figs. 1 and 3, or upwardly to operate as a closure for the lower end of the screen. Journaled in brackets 42 at the lower edge of the top of the hopper 32 is a crank shaft 43 provided at each end with crank arms 44. To each of the arms 44 is fastened a bracket 45 to which is pivotally connected the lower end of an arm 47 depending from the lower end of the screen frame 34.

It is a well-known fact that the amount of separation accomplished by an inclined screen is dependent not only upon the mesh of the screen but also upon the speed of travel of the material down the screenand that this speed of travel is dependent upon the angle of inclination of the screen and it is desirable that too great a proportion of fine material be not screened from the coal. Therefore the angles of inclination of the two screens are preferably non-adjustable, so that the operation of the device cannot be varied by workmen. Leading from the plate 12 is a delivery spout 51 provided at its lower end with projecting pins 52 upon which the loops of a bag 53 may be readily hooked. The spout is provided with a depending finger 541 which serves to assist in holding the bag in place.

In operation, the apparatus is drawn up alongside a car, as indicated in dotted lines in Fig. 1 and, by means of the Windlass 29., the screen frame 15 is adjusted until the delivery end of the frame 34: projects down into the wagon, and the upper end of the screen frame 3a lies as low as possible above the upper edge of the side of the car. The valves 26 will then be adjusted so that the full length of the screen will be effective. Thereupon the shoveler in the car will throw the coal into the hopper 36 and it will move down along screen 35, its speed being initially retarded by the valve 37. The lumps of coal will pass down over the screen 35 and into the wagon while the desired proportion of screenings will pass through the screen 35 and hopper 32 onto screen 16. The pea size passes down over the screen onto plate 12 and from thence through chute 51 into bag 53, while the finest material will drop upon the ground. When the wagon is filled it will be impossible to drive away because the lower end of the screen frame lies below the top of the wagon, therefore, the operator will give the shaft 43 about half rotation so as to lift the screen frame 34 into the position shown in Fig. 3, thus clearing the lower end of the screen frame from the wagon. Vhen a new wagon is brought into place the operator swings the shaft &3 down into the position shown in Fig. 1, thus reestablishing the most efficient angle of operation of the screen 35. This manipulation does not require any more intelligence than is ordinarily found in that class of labor which can be employed for shoveling coal; a degree of intelligence, by the way, which is not sufficient to properly manipulate special adjustments. In order to protect the upper end of the screen I provide some longitudinally extending separated fingers 61 upon which the coal will first drop after it has been thrown against the bottom of the shoveling hopper 36.

By the use of my apparatus I have found it possible to materially economize in the handling of coal from car to wagon.

I claim as my invention:

1. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holdin said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, and a second screen carried by said last mentioned support.

2. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen pivotally supported at its upper end upon the last mentioned support, and means for swinging said last mentioned screen to raise or lower its discharge end.

3. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen carried by said last mentioned support, a shoveling hopper carried by the upper end of said second screen, and a retarding valve arranged between said shoveling hopper and the adjacent screen.

4. A portable screen comprising a main portable body having an inclined screenframe mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen pivotally supported at its upper end upon the last mentioned support, means for swinging said last mentioned screen to raise or lower its discharge end, a shoveling hopper carried by the upper end of said second screen, and a retarding valve arranged between said shoveling hopper and the adjacent screen.

5. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen carried by said last mentioned support, a delivery spout arranged at the lower end of the first screen, and adjustable valves arranged between the lower end of said first mentioned screen and the spout, whereby the full length of the screen may be effective in different positions of adjustment of the first mentioned screen relative to the spout.

6. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen pivotally supported at its upper end upon the last mentioned support, means for swinging said last mentioned screen to raise or lower its discharge end, a delivery spout arranged at the lower end of the first screen, and adjustable valves arranged between the lower end of said first mentioned screen and the spout, whereby the full length of the screen may be effective in different positions of adjustment of the first mentioned screen relative to the spout.

7. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen carried by said last mentioned support, a shoveling hopper carried by the upper end of said second screen, a retarding valve arranged between said shoveling hopper and the adjacent screen, a delivery spout arranged at the lower end of the first screen, and adjustable valves arranged between the lower end of said first mentioned screen and the spout, whereby the full length of the screen may be efiective in different positions of adjustment of the first mentioned screen .relative to the spout.

8. A portable screen comprising a main portable body having an inclined screen frame mounted thereon, a screen longitudinally adjustable on said screen frame, means for holding said screen frame in various positions of adjustment, a second screen frame support mounted upon the first screen frame and inclined transversely thereof, a second screen pivotally supported at its upper end upon the last mentioned support, means for swinging said last mentioned screen to raise or lower its discharge end, a shoveling hopper carried by the upper end of said second screen, a retarding valve arranged between said shoveling hopper and the adjacent screen, a delivery spout arranged at the lower end of the first screen, and adjustable valves arranged between the lower end of said first mentioned screen and the spout, whereby the full length of the screen may be efiective in different positions of adjustment of the first mentioned screen relative to the spout.

9. A portable screen comprising a main portable body, an inclined screen mounted thereon, a second screen arranged above the first screen and inclined transversely thereof, and means for raising and lowering said upper screen bodily and maintaining the same inclination, while maintaining the same relative spacing between the upper and lower screens.

10. A portable screen comprising a main portable body, an inclined screen mounted as thereon, a second screen arranged above the first screen and inclined transversely thereof, means for raising and lowering said upper screen bodily and maintaining the same inclination, while maintaining the same relative spacing between the upper and lower screens, and means for vertically swinging the lower discharge end of the upper screen.

In witness whereof, I have hereunto set my hand and seal at Indianapolis, Indiana, this 24th day of February, A. D. one thousand nine hundred and eleven.

WILLIAM P. MYER [1..s.]

Witnesses:

ARTHUR M. Hoop, FRANK A. FAHLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 

